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  <title>道路交通事故车辆速度鉴定</title>
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      <h3 style="margin-left:5% ;width:auto; ">汽车与二轮摩托车或自行车质心的前侧侧面碰撞</h3>
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      <p class="my_span">公式7:</p>
      <img class="img_gx" src="img/公式7.jpg" alt="Image description">
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      <p>
        <input type="number" class="input_x" id="input1" min="1" placeholder="请输入k" />
        <span class="my_span">k：汽车附着系数修正值 </span>
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      <p>
        <input type="number" class="input_x" id="input2" min="1" placeholder="请输入s" />
        <span class="my_span">s: 碰撞后汽车的滑移距离，单位为米（m）</sapn>
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      <p>
        <input type="number" class="input_x" id="input3" min="1" placeholder="请输入φ" />
        <span class="my_span">φ：汽车的滑动附着系数 </span>
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      <p>
        <input type="number" class="input_x" id="input4" min="1" placeholder="请输入θ" />
        <span class="my_span">θ：汽车滑移偏向角，单位为度（rad）</span>
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      <p>结果：<span id="result">0 </span>
        <span class="my_span">( v：交通事故瞬间二轮摩托车或自行车、汽车速度，单位为千米每小时（Km/h）)</span>
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      <button onclick="calculate()" class="btn-s">提交</button>
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